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Corrected handling of format/frequency

pull/4635/head
Deepika 2017-06-26 14:34:13 -05:00
parent de89be35f8
commit d22d8af2a2
1 changed files with 16 additions and 4 deletions
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16
drivers/SPI.cpp
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@ -43,16 +43,28 @@ void SPI::format(int bits, int mode) {
lock(); lock();
_bits = bits; _bits = bits;
_mode = mode; _mode = mode;
// If changing format while you are the owner than just
// update format, but if owner is changed than even frequency should be
// updated which is done by acquire.
if (_owner == this) {
spi_format(&_spi, _bits, _mode, 0); spi_format(&_spi, _bits, _mode, 0);
_owner = this; } else {
_acquire();
}
unlock(); unlock();
} }
void SPI::frequency(int hz) { void SPI::frequency(int hz) {
lock(); lock();
_hz = hz; _hz = hz;
// If changing format while you are the owner than just
// update frequency, but if owner is changed than even frequency should be
// updated which is done by acquire.
if (_owner == this) {
spi_frequency(&_spi, _hz); spi_frequency(&_spi, _hz);
_owner = this; } else {
_acquire();
}
unlock(); unlock();
} }